Axial Load Behavior Of A Driven Cast-In-Situ Pile In Sand,
2013
National University of Ireland, Ireland
Axial Load Behavior Of A Driven Cast-In-Situ Pile In Sand, Kevin N. Flynn, Bryan A. Mccabe, Derek Egan
International Conference on Case Histories in Geotechnical Engineering
Driven cast-in-situ (DCIS) piles are a popular choice amongst piling contractors due to the ability to readily adjust pile lengths to suit the depth of penetration required. Despite their widespread use, there is a dearth of published data on the axial load behavior of temporary-cased DCIS piles, particularly in cohesionless soils. This paper reports the results of a static compression load test on a 340 mm nominal diameter, 5.75 m long DCIS pile in a dense sand deposit in Shotton, Wales. The test pile was instrumented with vibrating-wire strain gauges at various levels to determine the shaft and base resistance …
Bridge Foundation Piles In Varved Glaciolacustrine Deposits Exhibiting Very High Soil Setup,
2013
American Consulting Services, Inc., St. Paul, MN
Bridge Foundation Piles In Varved Glaciolacustrine Deposits Exhibiting Very High Soil Setup, Gregory R. Reuter
International Conference on Case Histories in Geotechnical Engineering
A pile-supported bridge was to be constructed at a site in Vadnais Heights, Minnesota, located north of St. Paul, in an area underlain by a significant deposit of glaciolacustrine sand, silt, and clay, which extended to a depth of about 39 m. For the geotechnical analysis, the conventional soil borings were supplemented by performing seismic piezocone (SCPTu) soundings. At the beginning of bridge construction, test piles were driven which experienced unusually easy driving to the termination depths of 38.4 to 40.2 m. High strain dynamic testing was used during pile installation and during restrike. After only a 2-day waiting period, …
Comparison Between Dynamic Responses Of Hollow And Solid Piles For Offshore Wind Turbine Foundations,
2013
Aalborg University, Denmark
Comparison Between Dynamic Responses Of Hollow And Solid Piles For Offshore Wind Turbine Foundations, M. Bayat, Lars Vabbersgaard Andersen, Lars Bo Ibsen
International Conference on Case Histories in Geotechnical Engineering
The offshore wind energy industry is turning out ever larger numbers of offshore wind turbines every year. One way to achieve a cost-effective design is to have a better understanding of the dynamic response of offshore structures. That is why it is getting more and more important to understand the dynamic behavior of soil and interaction between soil and piles. To avert damage to offshore foundation, it becomes necessary to identify and quantify the soil-structure interaction and the related damping effects on the system. In this study, a single pile is investigated by means of boundary integral equations. The pile …
Design And Performance Of Shallow Foundations Over Diagenetic Limestone Along The Arab Gulf Coast: Realities And Challenges,
2013
Geotechnical Engineering, Ames, IA
Design And Performance Of Shallow Foundations Over Diagenetic Limestone Along The Arab Gulf Coast: Realities And Challenges, Waddah Akili
International Conference on Case Histories in Geotechnical Engineering
The near surface, highly weathered limestones of the southern shores of the Arab Gulf region have complex lithologies attributable to post depositional changes that have altered hard rocks into soils and some carbonate soils into a rock matrix. The matrix, often clayey, sometimes cemented (with gypsum, anhydrite, and /or calcite grains) is not a rock nor could be considered as a soil per se. These deposits are: difficult to sample in the undisturbed state, extremely variable in composition and properties, and are susceptible to degradation, particularly when wet. The paper presents typical geotechnical information from selected sites where these deposits …
Differential Settlements Of Cylindrical Steel Storage Tanks: Case Of The Marine Terminal Of Bejaia,
2013
University of Sciences and Technology Houari Boumediene, Algeria
Differential Settlements Of Cylindrical Steel Storage Tanks: Case Of The Marine Terminal Of Bejaia, Bahar Ramdane, Sadaoui Omar, Amzal Djahid
International Conference on Case Histories in Geotechnical Engineering
The marine terminal of Bejaia is a zone of storage of hydrocarbon liquids. It consists of sixteen cylindrical floating roof steel tanks founded on a reconstituted and compacted granular fill. At the end of 1980s, after about 25 years of satisfactory service, the tanks were subjected to settlements, ovalization and tilting. Because of a distortion of the steel tank walls and jamming of the floating roof, a shear failure was evident and some tanks were considered unsafe for service. A comprehensive geotechnical investigation was conducted to evaluate the subsurface conditions of the site and to provide recommendations for foundation repair …
Dynamic Response Of Vertical And Batter Piles,
2013
Indian Institute of Technology Madras, India
Dynamic Response Of Vertical And Batter Piles, R. M. Subramanian, A. Boominathan
International Conference on Case Histories in Geotechnical Engineering
The lateral forced vibration test was carried out on driven cast in-situ concrete vertical piles of 500 mm diameter in a petrochemical complex site in Paradip, India. The site predominantly consists of silty sand for the top 3 m with shear wave velocity of 200 m/s and it is followed by clayey sand with shear velocity increases from 415 m/s to 460 m/s over pile termination depth of about 17 m . The piles were subjected to a sinusoidal lateral force with magnitude of 0.3 kN to 9.5 kN in the frequency range of 5 to 30 Hz. A 3D …
Geotechnical Site Assessment By Seismic Piezocone Test In North Of Denmark,
2013
Aalborg University, Denmark
Geotechnical Site Assessment By Seismic Piezocone Test In North Of Denmark, Sarah Firouzianbandpey, Benjaminn Nordahl Nielsenl, Lars Vabbersgaard Andersen, Lars Bo Ibsen
International Conference on Case Histories in Geotechnical Engineering
These days cone penetration tests (CPT) have gained more popularity as an alternative to the conventional laboratory tests for subsurface investigation and estimation of soil parameters. Due to increasing interest in soil dynamics in the last decades, there is a development of CPT as a seismic piezocone penetration test (SCPTU) which provides shear wave velocity measurements simultaneously with measurements of tip resistance (qc), sleeve friction (fs) and pore pressure (u). The results can be used for determination of deformation parameters of soil. In this regard there have been proposed different empirical correlations between cone data and …
Ground Heave Due To Jet Grouting Near An Existing Structure,
2013
CONICET – Universidad Nacional de Córdoba, Argentina
Ground Heave Due To Jet Grouting Near An Existing Structure, Federico Pinto, Gary M. O’Neil, Amy D. Apfelbaum, Andrew J. Whittle
International Conference on Case Histories in Geotechnical Engineering
Renovations of the MBTA Copley Station in Boston included construction of a new elevator shaft to improve disabled access to the existing Green Line station. The site is immediately adjacent to the Eastern façade of the historic Old South Church. The construction work required excavation support including a perimeter secant pile wall and a jet-grouted base plug. Significant ground and structural movements were observed during jet grouting, mainly associated with soil displacements during grout injection. A three dimensional numerical model was developed, using the Plaxis 3D Foundation™ program, in order to test the hypothesis that the observed movements of the …
High Capacity Rock Socketed Piles In Scotland, Uk,
2013
AECOM Ltd., United Kingdom
High Capacity Rock Socketed Piles In Scotland, Uk, Peter Boyd, Baran Ozsoy
International Conference on Case Histories in Geotechnical Engineering
The New Victoria Hospital in Glasgow, Scotland provides a 30,000m² ‘Ambulatory Care and Diagnostic’ (ACAD) facility. The ground conditions beneath the site comprise a variable thickness of Made Ground overlying Glaciomarine Deposits and Glacial Till which in turn rests on the Carboniferous bedrock. However the solid geology is complex and interrupted by a number of faults. The Carboniferous rocks under the site include a number of coal seams, although it is thought that none of these seams has been worked at this location. Due to the relatively low strength of the glacial soils, it was necessary to support the building …
Performance Of Driven Piles In Gravelly Sands With Cobbles,
2013
Los Angeles County Department of Public Works, Alhambra, CA
Performance Of Driven Piles In Gravelly Sands With Cobbles, William S. Man, Yonah R. Halpern
International Conference on Case Histories in Geotechnical Engineering
Steel piles are known for their high resistance to driving and handling, as well as their large lateral stiffness. Difficulty of driving depends on the subsurface conditions, pile type, and type of impact hammer used to drive piles. This case history presents observations of pile construction for a bridge widening retrofit in the city of Irwindale. The proposed foundations consisted of twenty seven 14-inch-diameter Caltrans Standard Plan B2-5 Alternative V closed-end pipe piles with quarter-inch thick steel sections. Piles were 35 feet in length and were designed to be driven piles. Subsurface investigations indicated the soils consisted of silty gravels …
Punch-Through Foundation Failure Of Oil Drilling Platform In The Deltaic Plain Of The Niger River,
2013
Enoch George Associates Ltd., Nigeria
Punch-Through Foundation Failure Of Oil Drilling Platform In The Deltaic Plain Of The Niger River, E. A. J. George, T. J. Atuboyedia, M. Oju, T. E. George
International Conference on Case Histories in Geotechnical Engineering
The deltaic plains of the Niger River are composed mostly of Pleistocene sediments. On the occurrence of low stands of the sea level due to eustatic changes, the sediments were exposed to temperature fluctuations during the Quaternary period, leading to strata sequence generated in these plains that allowed strong layers of soil to overlie weaker layers of the same age. Most of the onshore explorations for oil and gas in Nigeria take place within these plains of the Niger. A well was to be drilled in search of oil and gas in allocation within these plains. As often done, a …
Rotary Driven Pipe Piles For A 14-Story Building In New York City,
2013
Magnum Geo-Solutions, LLC, Fort Collins, CO
Rotary Driven Pipe Piles For A 14-Story Building In New York City, Howard A. Perko, Michael Paquette, Marc Gallagher, Andrew Burns
International Conference on Case Histories in Geotechnical Engineering
Rotary driven pipe piles are a unique solution for foundation construction in constrained urban areas. These piles consist of a closedend, steel casing with sacrificial drill tip. The casing and drill tip are rotated into the ground using a fixed-mast drill rig. Three hundred sixty two 12.75-inch diameter, rotary driven pipe piles were installed to support a 14-story building in the upper east side of Manhattan. The soils consisted of uncontrolled fill, organic silts, and peat over stiff, saturated, varved silts and clays. A novel mathematical relationship between capacity, installation crowd, and torque was used to develop initial pile installation …
Seismic Retrofit Of 92/280 I/C Foundations By Micropile Groups In San Francisco Bay Area, California,
2013
Caltrans, Geotechnical Services, Design West, Oakland, CA
Seismic Retrofit Of 92/280 I/C Foundations By Micropile Groups In San Francisco Bay Area, California, Mahmood Momenzadeh, Tung Nguyen, Phil Lutz, Tim Pokrywka, Chris Risen
International Conference on Case Histories in Geotechnical Engineering
The Route 92/280 interchange (I/C) connectors are the latest major bridge structures to be retrofitted in the San Francisco Bay Area, California, United States. The presence of poor quality rocks and high groundwater due to the proximity of the San Andreas Fault at this site combined with low overhead of the connectors superstructure at some of the existing bents led to the use of micropile foundation system instead of a conventional Cast in Drill Hole (CIDH) pile system. The existing CIDH foundations were retrofitted at 5 bents by micropile group with very heavy column steel reinforcement additions and 11 bent …
Seismic Hazard And Geophysical Investigations For Architectural Heritage Preservation In Egypt: The Case Of Habib Sakakini Palace,
2013
Cairo University, Egypt
Seismic Hazard And Geophysical Investigations For Architectural Heritage Preservation In Egypt: The Case Of Habib Sakakini Palace, Sayed Hemeda, Mohamed Gamal, Kyriazis Pitilakis
International Conference on Case Histories in Geotechnical Engineering
The modern architectural heritage of Egypt is rich, and extensively variable. It covers all kinds of monumental structures from palaces, public buildings, residential and industrial buildings, to bridges, springs, gardens and any other modern structure, which falls within the definition of a monument and belongs to the Egyptian cultural heritage. We present herein a comprhensive geophysical survey and seismic hazard assesment for the rehabilitation and strengthening of Habib Sakakini’s Palace in Cairo, which is considered one of the most significant architectural heritage sites in Egypt. The palace located on an ancient water pond at the eastern side of Egyptian gulf …
Soil Movements Due To Displacement Pile Driving,
2013
University of Durham, United Kingdom
Soil Movements Due To Displacement Pile Driving, M. K. Chong
International Conference on Case Histories in Geotechnical Engineering
The effects of displacement piling are well documented with many cases of movements caused to adjacent structures and detrimental effects on recently installed piles. The author’s experience with dealing with ground displacements of raft piling in deep marine clays in Singapore led to the development of a method for calculating the ground movements to assess the cumulative effects of pile driving. The method is derived from soil mechanics parameters, principle of potential energy, strain energy and work done by the stresses in the soil undergoing a cylindrical cavity expansion process and the stresses in the soil undergoing large strains direct …
The Effect Of Quality Of Subsoil Structure Identification On The Execution Of Pile Structures For Bridge Supports,
2013
University of Technology and Life Sciences, Poland
The Effect Of Quality Of Subsoil Structure Identification On The Execution Of Pile Structures For Bridge Supports, Maciej Kumor, Zbigniew Młynarek
International Conference on Case Histories in Geotechnical Engineering
Supports of road viaducts or bridges are founded predominantly on piles. This is determined by the subsoil structure and the location of the designed object. In certain cases the selection of the pile system is also influenced by the neighboring buildings and infrastructure. The design for bridge foundation in such cases needs to be based on high quality geotechnical documentation. Although this criterion is specified in Eurocode 7: PN-EN 1997 parts 1 and 2, binding throughout Europe, including Poland, frequently geotechnical documentations are not very precise and do not present an accurate subsoil structure, leading to building disasters. Such a …
Underpinning Using Micropiles For Fragile Building Adjacent To Deep Excavation In Manhattan, New York,
2013
Arup, New York, NY
Underpinning Using Micropiles For Fragile Building Adjacent To Deep Excavation In Manhattan, New York, Chu Ho, Adrian Pena-Iguaran
International Conference on Case Histories in Geotechnical Engineering
A deep excavation was to be carried out adjacent to a fragile building in weak ground. An underpinning scheme utilizing 250kips capacity micropiles socketed into the bedrock was designed to provide stability to the building during the excavation. In adopting the micropile system, the interior of the basement had to be retrofitted with a new reinforced concrete structural system of walls, slabs and beams to provide rigid framing for transfer of loads between the existing structural walls and the new micropiles. The micropiles were installed from inside the basement of the adjacent building under low headroom conditions. A preliminary load …
Use Of Liquid Limit And Dry Density Test Method For Collapsible Soil Identification,
2013
Tavanab Consulting Engineering Co., Iran
Use Of Liquid Limit And Dry Density Test Method For Collapsible Soil Identification, Mehdi Khalili Noutash, Masoud Hajialilue Bonab, Mehrad Khalili Noutash
International Conference on Case Histories in Geotechnical Engineering
One of the most recognized geotechnical hazard which causes dramatic life lost and serious damages to different structures, are the collapsible soils under the foundation of structures. This problem becomes more critical when water is seeped or induced to the soil structure because collapsible soils are metastable and they have an open structure Khoda Afarin main canal is a major conveyance canal which is located and is under construction in Moghan and Khoda Afarin region pass throw East Azerbaijan and Ardabil provinces in IRAN. Presence of collapsible soils in some portion of this canal bed has brought the necessity of …
Behavior Prediction And Monitoring Of A Deep Excavation In The Historic Center Of Brescia,
2013
University of Brescia, Italy
Behavior Prediction And Monitoring Of A Deep Excavation In The Historic Center Of Brescia, Alex Sanzeni, Francesco Colleselli, Moira Mino, Alberto Merlini
International Conference on Case Histories in Geotechnical Engineering
The construction of a new underground car park in the historic center of Brescia (Northern Italy) required the execution of a 130m long, 23m wide and 15-20m deep excavation which was supported by concrete multi-anchored diaphragm walls. The site is located between two facing ancient walls (15-16th century) that support 3-4 storey buildings in precarious conditions. The soil stratigraphy comprises a superficial layer of made ground over a clayey to sandy soil deposit supporting a perched water table. A comprehensive monitoring system was set up before construction that included inclinometers, precise leveling and automatic structural monitoring by means of a …
Causes And Circumstances Of Red Mud Reservoir Dam Failure In 2010 At Mal Zrt Factory Site In Ajka, Hungary,
2013
FUGRO Consult Ltd., Hungary
Causes And Circumstances Of Red Mud Reservoir Dam Failure In 2010 At Mal Zrt Factory Site In Ajka, Hungary, David Turi, Jozsef Pusztai, Istvan Nyari
International Conference on Case Histories in Geotechnical Engineering
The red mud reservoir failure in Ajka, Hungary has claimed 10 lives and cost millions of dollars in damages. Immediately after emergency measures investigations started to shed light on causes and circumstances. The authors performed an extensive desktop study of about 20 thousand pages reaching back to the 1970s, when the facility has been designed. Beside this study the dam and its area have gone through series of site investigations, from drilling to CPTu testing and laboratory testing. The information so collected resulted in the following conclusion. Contributing factors to this substantial dam failure included poor siting of the facility, …
